Wedge Anchor System of Measurement Inch Anchor Diameter 1/2 in Thread Size 1/2 In.-13 Overall Length 5 1/2 in Thread Length 2 1/8 in Material Stainless Steel Material Grade/Class 18-8 Finish Plain Compatible Material Concrete Drill Bit Size 1/2 in Minimum Installation Depth 2 1/2 in Minimum Material Thickness 4 in Nut Width 0.75 in Washer Outside Diameter 1.0625 in Wedge Anchor Type Wedge Anchor Seismic Approved Yes ICC Approved for Cracked Concrete Yes